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Excitation Phenomena in Millipore Filters Impregnated with Unsaturated Compound and Their Possibility as Sensors

浸渍不饱和化合物的微孔过滤器中的激发现象及其作为传感器的可能性

基本信息

批准号：
61550039
负责人：
KAWAKUBO Tatsuyuki
金额：
$ 1.09万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

项目摘要

The investigation performed under this Grant-in-Aid has been concerned with two subjects. The first one is on a self-sustained electrical oscillation in a Millipore filter impregnated with dioleyl phosphate. A change in its conductance at a threshold concentration of environmental salt solution was interpreted in terms of a change in adsorptive reaction rate on the surface which was derived from an autocatalytic reaction model. The model also accounted for a self-sustained oscillation which was observed when the salt concentration of one side of the membrane was higher than the threshold mentioned above and that of the other side lower. The second one is on a self-sustained electrical oscillation observed in a water/ oil/water system in which one of the water phases contains a surfactant. We have examined the surfactant concentration dependence of the oscillation and found that specific concentrations were needed for a stable oscillation to persist. The experimental result was interpreted by the diffusion of surfactant ions in water and their absoption into the oil by formation of inverted-micelles.

根据这项补助金进行的调查涉及两个主题。第一个是在用磷酸二油酯浸渍的Millipore过滤器中的自持电振荡。在阈值浓度的环境盐溶液中，其电导的变化被解释为在表面上的吸附反应速率的变化，这是来自自催化反应模型。该模型还解释了当膜一侧的盐浓度高于上述阈值而另一侧的盐浓度低于阈值时观察到的自持振荡。第二个是在水/油/水体系中观察到的自持电振荡，其中一个水相含有表面活性剂。我们已经研究了振荡的表面活性剂浓度依赖性，并发现需要特定的浓度才能保持稳定的振荡。实验结果用表面活性剂离子在水中的扩散和通过形成反胶束吸收到油中来解释。